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율무 종자의 Fusarium 속 진균 저감화를 위한 약제선발 및 방제시기 연구

Optimal Control Period and Selection of Pesticides for Reduction of Fusarium spp. in Coix lacryma-jobi L. var. ma-yuen (Rom.Caill.) Stapf

한국약용작물학회지 2021년 29권 1호 p.28 ~ 34
황호섭, 안태진, 이윤지, 이은송, 임흥빈, 이정훈,
소속 상세정보
황호섭 ( Hwang Ho-Sop ) - RDA NIHHS Department of Herbal Crop Research
안태진 ( Ahn Tae-Jin ) - RDA NIHHS Department of Herbal Crop Research
이윤지 ( Lee Yun-Ji ) - RDA NIHHS Department of Herbal Crop Research
이은송 ( Lee Eun-Song ) - RDA NIHHS Department of Herbal Crop Research
임흥빈 ( Lim Heung-Bin ) - Chungbuk National University Department of Industrial Crop Science and Technology
이정훈 ( Lee Jeong-Hoon ) - RDA NIHHS Department of Herbal Crop Research

Abstract


Background: Adlay [Coix lacryma-jobi L. var. ma-yuen (Rom.Caill.) Stapf] is a nutritionally superior resource, but food hygiene problems are emerging due to mycotoxin contamination. It is difficult to predict the source and timing of mycotoxin contamination. Prevention and reduction methods for mycotoxins are important. Experiments were conducted to determine the optimal time for spraying pesticides and to select pesticides effective in the reduction of mycotoxins.

Methods and Results: Metconazole and fludioxonil were sprayed onto the test field during the three growth stages, i.e., before the flowering stage, after the flowering stage, and at the maturing stage. Experiments were conducted on fungal density, seed yield, and mycotoxin evaluation of fumonisin (FUM), deoxynivalenol (DON), and zearalenone (ZEN). The harvested adlay seeds were analyzed for residual pesticides. Seed yield, fungal density and mycotoxins were better than in other treatments when metconazole was administered after flowering. The residual pesticides increased over time; after flowering, metconazole (1.25 ㎎·㎏?1) was up to 1.3 times higher than fludioxonil (0.96 ㎎·㎏?1). Spraying in the after-flowering stage was superior to other growth stages, and metconazole was more effective than fludioxonil in reducing mycotoxins.

Conclusions: It is considered most effective to treat adlay with metconazole after the flowering phase to reduce fungal toxins in Fusarium spp.

키워드

Coix lacryma-jobi L. var. ma-yuen (Rom.Caill.) Stapf; Fusarium; Deoxynivalenol; Fludioxonil; Fumonisin; Metconazole; Seeds; Zearalenone

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